2005 Chevrolet Blazer Electrical system Problems
- Complaints
- 4about this part
- Share
- 27%of 15 total for the year
- Median mileage
- 75,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the electrical system of the 2005 Chevrolet Blazer, 27% of the 15 complaints for this model year. Where a mileage was given, the median is 75,000 miles. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I was returning from las vegas on a ruff paved desert hwy in my 2005 5 speed 2 door chevy Blazer when I notice a slight smell of electrical smoke. I turned on the dome light and notice the turning signal switch arm bouncing a lot with some smoke coming out there at the column ! I slowed from 65 to 40 with my flashers on, problem solved . Got back on a smooth free way at 65 with no smoke. The switch arm got sloppier over time but still worked for about six months. …”
NHTSA complaint #10630515, filed 2014-09, 77,333 miles“2005 Chevrolet trailblazer 4wd 1. Check engine light stays on consistently 2. When driving at night the headlights and instrument lights will dim and/or flash on and off. 3. When stopped the vehicle will suddenly rev which has happened many times and fortunately I pressed the brake in time or I would have rear ended several vehicles. 4a. The gauges on my vehicle are completely haywire. The speedometer will at times not move at all or go all the way past 120 MPH, at other times it will stick on whatever speed I might be going at the moment and not move. …”
NHTSA complaint #10258680, filed 2009-02, 75,000 miles“As of october 20,2014 I have yet to see the 1999 chevorlet s_10 ls or the 2005 chevorlet Blazer s-t 4x4 my husband has tested both of these ignition switches and they are the same. He then called a GM dealership and they told him to not put anything heavy on the key ring. We are getting the same spill from GM as everyone else.why hasn't the s-10's and blazers been inspected, they have the same ignition switch from the 1999 s-10 to the 2005 Blazer 4x4 and are very easy to knock in to accessory position. …”
NHTSA complaint #10648980, filed 2014-10Related service bulletins
- 11009156Oct 25, 2024This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester…
- 11006621Aug 26, 2024Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which…
- 11002312Jun 6, 2024This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414…
- 11000162Apr 30, 2024The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other…
- 10252735Mar 28, 2024This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
- 10244214Sep 21, 2023This informational bulletin provides information for the IPC odometer programming method quick reference guide.
- 10239102Jun 29, 2023The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other…
- 10225615Oct 19, 2022This service bulletin provides information on Module Harvesting.
- 10222776Sep 16, 2022The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other…
- 10198890May 25, 2021This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 11 | 32% |
| 2024 | 7 | 13% |
| 2023 | 7 | 16% |
| 2022 | 20 | 37% |
| 2021 | 40 | 28% |
| 2020 | 78 | 35% |
| 2019 | 62 | 33% |
| 2008 | 1 | 20% |
| 2006 | 2 | 11% |
| 2005 | 4 | 27% |
| 2004 | 10 | 20% |
| 2003 | 9 | 12% |
| 2002 | 21 | 9% |
| 2001 | 40 | 12% |
| 2000 | 49 | 8% |
| 1999 | 40 | 9% |
| 1998 | 71 | 10% |
| 1997 | 89 | 12% |
| 1996 | 62 | 5% |
| 1995 | 70 | 6% |
| 1994 | 10 | 2% |
| 1993 | 17 | 3% |
| 1992 | 18 | 6% |
| 1991 | 16 | 7% |
| 1990 | 4 | 13% |
| 1989 | 6 | 16% |
| 1988 | 5 | 13% |
| 1986 | 1 | 5% |
| 1985 | 1 | 3% |
Other parts of the 2005 Chevrolet Blazer
7 complaintsAir bags
1 complaintsEngine cooling
1 complaintsExterior lighting
1 complaintsLatches, locks and linkages
1 complaintsBody and structure
1 complaintsVehicle speed control
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2005 Chevrolet Blazer
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology